WebGLQuery.h - mozsearch

Enable keyboard shortcuts

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef WEBGL_QUERY_H_

#define WEBGL_QUERY_H_

#include "WebGLObjectModel.h"

#include "nsThreadUtils.h"

namespace mozilla {

namespace webgl {

class AvailabilityRunnable;

}  // namespace webgl

class WebGLQuery final : public WebGLContextBoundObject {

  friend class webgl::AvailabilityRunnable;

  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(WebGLQuery, override)

 public:

  const GLuint mGLName;

 private:

  GLenum mTarget;

  RefPtr<WebGLQuery>* mActiveSlot;

  bool mCanBeAvailable = false;  // Track whether the event loop has spun

  ////

 public:

  GLenum Target() const { return mTarget; }

  bool IsActive() const { return bool(mActiveSlot); }

  ////

  explicit WebGLQuery(WebGLContext* webgl);

 private:

  ~WebGLQuery() override;

 public:

  ////

  void BeginQuery(GLenum target, RefPtr<WebGLQuery>& slot);

  void EndQuery();

  Maybe<double> GetQueryParameter(GLenum pname) const;

  void QueryCounter();

};

}  // namespace mozilla

#endif  // WEBGL_QUERY_H_